1. Section 9-7 Circles and Lengths of Segments

2. Theorem 9-11 When two chords intersect inside a circle, the product of the segments of one chord equals the product of the segments of the other chord.

3. C R S H N

4. C R S H N x 8 6 2 Example:

5. Theorem 9-12 When two secant segments are drawn to a circle from an external point, the product of one secant segment and its external segment equals the product of the other secant segment and its external segment.

6. A P D C B

7. A P D C B 6 5 9 x Example:

8. Theorem 9-13 When a secant segment and a tangent segment are drawn to a circle from an external point, the product of the secant segment and its external segment is equal to the square of the tangent segment.

9. M A T H

10. 20 4x4x x Example: